V型无压载水小型LNG运输船设计研究

Design and Research of V-type No-ballast Water Small LNG Carrier

船舶压载水引发海洋污染、外来生物入侵,会给海域带来严重环境问题,引起寄生虫和病原体的传播。为实现小型LNG运输船的无压载水操作,参考日本V型无压载水船舶的设计理念,结合小型LNG运输船C型液货舱的结构特点,以及LNG运输船的规范要求,采用V型船体、双机双桨和双层底双层壳的设计。以2×104 m3 LNG运输船为例,探讨线型设计、液货系统设计和动力系统设计。介绍船舶满足航行要求的操作方法,分析无压载水LNG运输船的发展前景。

Marine ballast water causes marine pollution and invasion of alien species,which will bring serious environmental problems to the sea areas and cause the spread of parasites and pathogens.In order to realize the non-ballast water operation of small LNG carriers,referring to the design concept of Japanese V-type non-ballast water ship,combined with the structural characteristics of the small LNG carrier C-type cargo tank and the specification requirements of LNG carriers,the design of V-type hull,double engines and double propellers,and double-layer bottom double-layer shell is adopted.Taking the 2×10 4 m 3 LNG carrier as an example,the linear design,liquid cargo system design and power system design are discussed.The operation method of the ship to meet the navigation requirements is introduced,and the development prospects of the non-ballast water LNG carrier are analyzed.